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Signal analysis: Define the second harmonic relative to the base tone. In frequency-domain terms, a signal’s second harmonic is how many times the signal’s fundamental frequency? Choose the correct description.

Difficulty: Easy

Equal to the fundamental frequency
Twice the fundamental frequency
Three times the fundamental frequency
Half the fundamental frequency

Correct Answer: Twice the fundamental frequency

Explanation:

GivenHarmonic relationship to a base (fundamental) frequency f.

Concept/ApproachThe n-th harmonic has frequency n·f. Therefore, the second harmonic = 2f.

Final AnswerTwice the fundamental frequency.

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